GILDERSLEEVE GEOTHERMAL Open Loop Systems What is an open-loop system? The term “Open-Loop” is commonly used to describe a geothermal heat pump system that uses groundwater from a conventional well as a heat source in winter and a heat sink in summer. The groundwater...

GILDERSLEEVE GEOTHERMAL Closed Loop Systems What is a closed-loop system? The term “closed-loop” is used to describe a geothermal heat pump system that uses a continuous loop of special buried plastic pipe as a heat exchanger. The pipe is connected to the indoor heat...